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  <h1 align="center">ITK-SNAP Shortcuts</h1>

<table border='1' ><tr ><td  align='center' colspan='2'><strong>Image Operations</strong></td></tr> 
<tr ><td  align='left'>Alt-I</td><td  align='left'>Adjust image contrast automatically</td></tr> 
<tr ><td  align='left'>Ctrl-I</td><td  align='left'>Show image contrast window</td></tr> 
<tr ><td  align='left'>S</td><td  align='left'>Hide/reveal segmentation</td></tr> 
<tr ><td  align='left'>A</td><td  align='left'>Increase segmentation transparency</td></tr> 
<tr ><td  align='left'>D</td><td  align='left'>Decrease segmentation transparency</td></tr> 
<tr ><td  align='center' colspan='2'><strong>Tool Selection Commands</strong></td></tr> 
<tr ><td  align='left'>1</td><td  align='left'>Crosshairs tool</td></tr> 
<tr ><td  align='left'>2</td><td  align='left'>Zoom/pan tool</td></tr> 
<tr ><td  align='left'>3</td><td  align='left'>Polygon tool</td></tr> 
<tr ><td  align='left'>4</td><td  align='left'>Automatic segmentation (<span class='wikiword'>SnAP</span> region) tool</td></tr> 
<tr ><td  align='left'>5</td><td  align='left'>Paintbrush tool</td></tr> 
<tr ><td  align='center' colspan='2'><strong>Slice Window Commands</strong><br />(cursor must be in a slice window)</td></tr> 
<tr ><td  align='left'><span class='wikiword'>PgUp</span></td><td  align='left'>Show next slice in current slice window (mouse must be inside)</td></tr> 
<tr ><td  align='left'><span class='wikiword'>PgDn</span></td><td  align='left'>Show previous slice in current slice window</td></tr> 
<tr ><td  align='left'>Arrow keys</td><td  align='left'>Move cursor left, right, up, down by one voxel</td></tr> 
<tr ><td  align='left'>Shift+Arrow keys</td><td  align='left'>Move cursor by five voxels</td></tr> 
<tr ><td  align='center' colspan='2'><strong>3D Window Commands</strong><br />(cursor must be in the 3D window)</td></tr> 
<tr ><td  align='left'>S</td><td  align='left'>Store current viewpoint</td></tr> 
<tr ><td  align='left'>R</td><td  align='left'>Recall stored viewpoint</td></tr> 
<tr ><td  align='center' colspan='2'><strong>File Operations</strong></td></tr> 
<tr ><td  align='left'>Ctrl-G</td><td  align='left'>Open gray image</td></tr> 
<tr ><td  align='left'>Ctrl-1 ... Ctrl-5</td><td  align='left'>Open gray image from recently loaded list (1 = most recent)</td></tr> 
<tr ><td  align='left'>Ctrl-D</td><td  align='left'>Open segmentation image</td></tr> 
<tr ><td  align='left'>Ctrl-S</td><td  align='left'>Save segmentation image</td></tr> 
<tr ><td  align='left'>Ctrl-N</td><td  align='left'>Create new segmentation image (clear segmentation)</td></tr> 
<tr ><td  align='left'>Ctrl-Q</td><td  align='left'>Exit program</td></tr> 
<tr ><td  align='center' colspan='2'><strong>Paint Brush Mode</strong></td></tr> 
<tr ><td  align='left'>-(_)</td><td >Decrease paint brush size</td></tr> 
<tr ><td  align='left'>+(=)</td><td >Increase paint brush size</td></tr> 
<tr ><td  align='center' colspan='2'><strong>Changing <span class='wikiword'>Active/DrawOver</span> Label</strong></td></tr> 
<tr ><td  align='left'>,(&lt;)</td><td >Select the previous active label in the list</td></tr> 
<tr ><td  align='left'>.(&gt;)</td><td >Select the next active label in the list</td></tr> 
<tr ><td  align='left'>Ctrl-,(&lt;)</td><td >Select the previous drawover label in the list</td></tr> 
<tr ><td  align='left'>Ctrl-.(&gt;)</td><td >Select the next drawover label in the list</td></tr> 
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